The adverb 皆 "all"
If the number of people, animals or objects is greater than one, you can use the adverb 皆 
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In a sentence, 皆 is placed between a subject and a predicate.
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In a sentence, 皆 is placed between a subject and a predicate.
Pay attention
皆 is only used in literary language.
Examples
万物皆平等
All human beings are equal
wànwù jiē píngděng
所有宠物皆不准携入饭店内
Pets are not allowed in the hotel
suǒyǒu chǒngwù jiē bù zhǔn xīrù fàndiàn nèi
皆 is also used in the following phrases:
比比皆是
皆大欢喜
人人皆知
皆大欢喜
人人皆知 Examples
这个消息人人皆知
Everyone knows about it
zhè ge xiāoxi rén rén jiē zhī
这部电影的结尾皆大欢喜
This movie has a happy ending
zhè bù diànyǐng de jiéwěi jiē dà huān xǐ
这种例子比比皆是
Examples of this abound
zhè zhǒng lìzi bǐ bǐ jiē shì